Cushion for a respiratory mask



FIG. 1 is a front perspective view of a cushion for a respiratory mask according to an embodiment of our design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof

FIG. 4 is a top view thereof;

FIG. 5 is a rear perspective view thereof;

FIG. 6 is a front view of a cushion for a respiratory mask according to an embodiment of our design;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a top view thereof.

The features shown in broken lines depict environmental structure only and form no part of the claimed design. Where included, dotted lines represent the border between claimed and unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a cushion for a respiratory mask, as shown and described. 